Search Results for author: Abbas Khosravi

Found 35 papers, 8 papers with code

Leveraging Optimal Transport for Enhanced Offline Reinforcement Learning in Surgical Robotic Environments

no code implementations13 Oct 2023 Maryam Zare, Parham M. Kebria, Abbas Khosravi

In this paper, we introduce Optimal Transport Reward (OTR) labelling, an innovative algorithm designed to assign rewards to offline trajectories, using a small number of high-quality expert demonstrations.

Active Learning Offline RL +1

A Review of Deep Learning for Video Captioning

no code implementations22 Apr 2023 Moloud Abdar, Meenakshi Kollati, Swaraja Kuraparthi, Farhad Pourpanah, Daniel McDuff, Mohammad Ghavamzadeh, Shuicheng Yan, Abduallah Mohamed, Abbas Khosravi, Erik Cambria, Fatih Porikli

Video captioning (VC) is a fast-moving, cross-disciplinary area of research that bridges work in the fields of computer vision, natural language processing (NLP), linguistics, and human-computer interaction.

Dense Video Captioning Question Answering +3

SFE: A Simple, Fast and Efficient Feature Selection Algorithm for High-Dimensional Data

1 code implementation17 Mar 2023 Behrouz Ahadzadeh, Moloud Abdar, Fatemeh Safara, Abbas Khosravi, Mohammad Bagher Menhaj, Ponnuthurai Nagaratnam Suganthan

The results obtained indicate that the two proposed algorithms significantly outperform the other algorithms, and can be used as efficient and effective algorithms in selecting features from high-dimensional datasets.

feature selection

Automatic diagnosis of schizophrenia and attention deficit hyperactivity disorder in rs-fMRI modality using convolutional autoencoder model and interval type-2 fuzzy regression

no code implementations31 May 2022 Afshin Shoeibi, Navid Ghassemi, Marjane Khodatars, Parisa Moridian, Abbas Khosravi, Assef Zare, Juan M. Gorriz, Amir Hossein Chale-Chale, Ali Khadem, U. Rajendra Acharya

So far, numerous methods have been proposed for the diagnosis of Schizophrenia (SZ) and attention deficit hyperactivity disorder (ADHD), among which functional magnetic resonance imaging (fMRI) modalities are known as a popular method among physicians.

Controlled Dropout for Uncertainty Estimation

no code implementations6 May 2022 Mehedi Hasan, Abbas Khosravi, Ibrahim Hossain, Ashikur Rahman, Saeid Nahavandi

In this study, we present a new version of the traditional dropout layer where we are able to fix the number of dropout configurations.

Uncertainty Quantification

DoubleU-Net++: Architecture with Exploit Multiscale Features for Vertebrae Segmentation

no code implementations28 Jan 2022 Simindokht Jahangard, Mahdi Bonyani, Abbas Khosravi

Also, for xVertSeg dataset, we achieved precision, recall, and F1-score of above 97% for sagittal view, above 93% for coronal view , and above 96% for axial view.

Segmentation

Accurate Prediction Using Triangular Type-2 Fuzzy Linear Regression

no code implementations12 Sep 2021 Assef Zare, Afshin Shoeibi, Narges Shafaei, Parisa Moridian, Roohallah Alizadehsani, Majid Halaji, Abbas Khosravi

The current survey proposes a triangular type-2 fuzzy regression (TT2FR) model to ameliorate the efficiency of the model by handling the uncertainty in the data.

regression Stock Prediction +1

MCUa: Multi-level Context and Uncertainty aware Dynamic Deep Ensemble for Breast Cancer Histology Image Classification

1 code implementation24 Aug 2021 Zakaria Senousy, Mohammed M. Abdelsamea, Mohamed Medhat Gaber, Moloud Abdar, U Rajendra Acharya, Abbas Khosravi, Saeid Nahavandi

It exploits the high sensitivity to the multi-level contextual information using an uncertainty quantification component to accomplish a novel dynamic ensemble model. MCUamodelhas achieved a high accuracy of 98. 11% on a breast cancer histology image dataset.

Breast Cancer Histology Image Classification Classification +2

Uncertainty-Aware Credit Card Fraud Detection Using Deep Learning

no code implementations28 Jul 2021 Maryam Habibpour, Hassan Gharoun, Mohammadreza Mehdipour, AmirReza Tajally, Hamzeh Asgharnezhad, Afshar Shamsi, Abbas Khosravi, Miadreza Shafie-khah, Saeid Nahavandi, Joao P. S. Catalao

Countless research works of deep neural networks (DNNs) in the task of credit card fraud detection have focused on improving the accuracy of point predictions and mitigating unwanted biases by building different network architectures or learning models.

Fraud Detection Uncertainty Quantification

An Uncertainty-Aware Deep Learning Framework for Defect Detection in Casting Products

no code implementations24 Jul 2021 Maryam Habibpour, Hassan Gharoun, AmirReza Tajally, Afshar Shamsi, Hamzeh Asgharnezhad, Abbas Khosravi, Saeid Nahavandi

Secondly, to achieve a reliable classification and to measure epistemic uncertainty, we employ an uncertainty quantification (UQ) technique (ensemble of MLP models) using features extracted from four pre-trained CNNs.

Defect Detection Image Classification +2

Confidence Aware Neural Networks for Skin Cancer Detection

no code implementations19 Jul 2021 Donya Khaledyan, AmirReza Tajally, Ali Sarkhosh, Afshar Shamsi, Hamzeh Asgharnezhad, Abbas Khosravi, Saeid Nahavandi

Deep learning (DL) models have received particular attention in medical imaging due to their promising pattern recognition capabilities.

Transfer Learning

UncertaintyFuseNet: Robust Uncertainty-aware Hierarchical Feature Fusion Model with Ensemble Monte Carlo Dropout for COVID-19 Detection

1 code implementation18 May 2021 Moloud Abdar, Soorena Salari, Sina Qahremani, Hak-Keung Lam, Fakhri Karray, Sadiq Hussain, Abbas Khosravi, U. Rajendra Acharya, Vladimir Makarenkov, Saeid Nahavandi

Differently from most of existing studies, which used either CT scan or X-ray images in COVID-19-case classification, we present a simple but efficient deep learning feature fusion model, called UncertaintyFuseNet, which is able to classify accurately large datasets of both of these types of images.

Computed Tomography (CT)

Time series forecasting of new cases and new deaths rate for COVID-19 using deep learning methods

no code implementations28 Apr 2021 Nooshin Ayoobi, Danial Sharifrazi, Roohallah Alizadehsani, Afshin Shoeibi, Juan M. Gorriz, Hossein Moosaei, Abbas Khosravi, Saeid Nahavandi, Abdoulmohammad Gholamzadeh Chofreh, Feybi Ariani Goni, Jiri Jaromir Klemes, Amir Mosavi

This study is novel as it carries out a comprehensive evaluation of the aforementioned three deep learning methods and their bidirectional extensions to perform prediction on COVID-19 new cases and new death rate time series.

Time Series Time Series Forecasting

Optimal Uncertainty-guided Neural Network Training

no code implementations30 Dec 2019 H M Dipu Kabir, Abbas Khosravi, Abdollah Kavousi-Fard, Saeid Nahavandi, Dipti Srinivasan

Most of the existing cost functions of uncertainty guided NN training are not customizable and the convergence of training is uncertain.

Prediction Intervals Uncertainty Quantification

Wind ramp event prediction with parallelized Gradient Boosted Regression Trees

no code implementations17 Oct 2016 Saurav Gupta, Nitin Anand Shrivastava, Abbas Khosravi, Bijaya Ketan Panigrahi

Accurate prediction of wind ramp events is critical for ensuring the reliability and stability of the power systems with high penetration of wind energy.

Classification General Classification +1

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